Antenna Location • Communications

SYS

ConditionCondition

Emplacements antennes airframe — COM / NAV / ATC / TCAS / RA / HF — inspection extérieure et MEL/CDL.Airframe antenna locations — COM / NAV / ATC / TCAS / RA / HF — exterior inspection and MEL/CDL.

ObjectifObjective

Identifier VHF-1 top vs VHF-2/3 belly, HF notch rudder, ordre RA TX/RX, et CDL 23-61 pour DME/Marker manquants.Identify VHF-1 top vs VHF-2/3 belly, HF rudder notch, RA TX/RX order, and CDL 23-61 for missing DME/Marker.

SILHOUETTE — top / nose / tailSILHOUETTE — top / nose / tail

Profil 737 NG — antennes top/tail/nose et belly (aft→forward). Silhouette teaching, zéro livrée.737 NG side profile — top/tail/nose and belly antennas (aft→forward). Teaching silhouette, zero livery.

737 NG antenna locations top view — Vue dessus (companion) — VHF-1, ELT, ATC/TCAS, VOR/LOC·HF, WX/GS.Top view companion — VHF-1, ELT, ATC/TCAS, VOR/LOC·HF, WX/GS.

TOP / TAIL / NOSE

ZoneZone	Antenna
Vertical stab tip	VOR / LOC
Vertical stab LE	HF (dielectric notch / shunt)
Aft top	ELT
Mid top	VHF COM 1
Forward top	ATC 1 · TCAS
Radome	WX RADAR · GLIDE SLOPE · backup LOC
Under-nose	LOCALIZER

BOTTOM (aft → forward)

Order	Antenna
1	VHF COM 2
2–5	ADF SENSE · MARKER BEACON · ADF 2 · DME 2
6–8	ADF 1 · VHF COM 3 · DME 1
9–12	RA1 TX · RA1 RX · RA2 RX · RA2 TX
13–14	ATC 2 · bottom TCAS

ILS REDUNDANCY · HF · E&E

ILS normal : dual Glide Slope (radome) + dual VOR/LOC (vertical tail). Backup : dual Localizer antennes dans radome.Normal ILS: dual Glide Slope (radome) + dual VOR/LOC (vertical tail). Backup: dual Localizer antennas in radome.
Bascule primary VOR/LOC ↔ backup LOC via deux switches Localizer Antenna dans E&E — coin supérieur droit, droite du rack E1.Switch primary VOR/LOC ↔ backup LOC via two Localizer Antenna switches in E&E — right upper corner, right of E1 rack.
HF = notch/shunt diélectrique dans leading edge rudder — souvent peu visible sous livrée.HF = dielectric notch/shunt in rudder leading edge — often hard to see under airline liveries.
RA : rectangles flush « DO NOT PAINT » ; ports RA spare possibles (config).RA: flush rectangular “DO NOT PAINT”; spare RA ports possible (config).

MEL / CDL

MEL 23 [Communications] · MEL 34 [Navigation]
Antenne DME ou Marker Beacon manquante/cassée → CDL 23-61Missing/broken DME or Marker Beacon antenna → CDL 23-61
Radome : 6 diverter strips — voir Lightning Strike.Radome: 6 diverter strips — see Lightning Strike.

BELLY RA — détailBELLY RA — detail

Ordre RA photo-fidèle aft→forward.Photo-faithful RA order aft→forward.

Photos belly derrière reveal hub uniquement. Inspection extérieure = teaching Normal.Belly photos behind hub reveal only. Exterior inspection = Normal teaching.